All sorts of After Action Reports (AAR's) are possible and they really help give others a feel for the game and act as a great promotional tool. It is easier to do single player ones but multiplayer are also great and you can write these from both sides and its very interesting to see the two sides tactics and how it develops.
If you are interested please just go ahead and start writing your AAR. Be sure to illustrate it with screenshots as this gets most attention.
Other will comment on your game and give ideas and suggestions and some of the really take on a life of their own with back story and complex plots. What you do is up to you.
The more the better so give it a try




